Seidman based his assertion that a sale is necessary on the $382 million-asset company's poor asset growth, lagging efficiency and "abysmal" returns on average assets and average equity. "I believe that a sale to a strategic buyer, because of [OBA Financial's poor financial performance, is the only way for the shareholders to maximize the value of their investment," Seidman wrote in a Sept. 12 letter to the company's board.